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Finding the Fourth Proportional to 520,503.04, 780,832.32 and 165,528.64

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Solution

The fourth proportional to 520,503.04, 780,832.32 and 165,528.64 is: 248,317.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,503.04 : 780,832.32 = 165,528.64 : x
  2. Step 2: Convert to fraction form
    520,503.04/780,832.32 = 165,528.64/x
  3. Step 3: Cross multiply
    520,503.04x = 780,832.32 × 165,528.64
  4. Step 4: Simplify right side
    520,503.04x = 129,250,111,997.65
  5. Step 5: Solve for x
    x = 129,250,111,997.65/520,503.04
  6. Step 6: Final answer
    x = 248,317.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.